Advertising-stereopticon



H. A. MIEDREICH.

ADVERTISING STEREOPTICON.

APPLICATION FILED APR- I5. I920.

.- 1 361,274. Patented Dec; 7, 1920.

2 SHEETS-SHEET gnuud 01,5

H. A. MIEDREICH.

ADVERTISING STEREOPTICON.

APPLICATION FILED APR. 15. 1920.

1,361,274; Patented Dec. 7,1920.

2 SHEETS-SHEET 2- attorney at the apex of which is an UNITED STATESPATENT err-ice.

HENRY A. mnpnnrcn, OF EVA SVILLE, INDIANA, assxenorv or ONE-HALF 'roHERBERT w. BECKER, or EVANSVILLE, INDIANA.

ADVERTISING STEREOPTIflON.

Specification of Letters Patent.

Patented Dec. '7, 1920.

Application filed April 15, 1920. Serial No. 374,126.

appertains to make and usethe same, reference being had to theaccompanying draw- .ings, and to the letters and figures of referencemarked thereon, which form a part of this specification;

The object of this invention is to provide an improved advertisingdevice to be used in connection with motion picture apparatus; that isto say, the invention has for its object to provide a device to showadvertis-.

ing slides in motion picture theaters in conjunction with the movingpictures, the advertising slides forming a frame around the picturescreen, and said slides being visible at all times without interferingin the least with the moving picture.

v The accompanying drawings clearly disclose an exemplary constructioncapable of carrying out the underlying principles of the invention.designate corresponding parts throughout the several views. Brieflydescribed:

Figure 1 is a perspective view of the device,- constituting theinvention,

Fig. 2 is a view in side elevation, partly in section, of the device,the supporting pedestal being broken away,

Fig. 3 is a view in front elevation of the carrier and the advertisingslides carried thereby, I

Fig. 4 is a fragmentary sectional view of said carrier and slides, and

Fig. 5 is a fragmentary view in front elevation of said carrier andslides, one of the latter being shown partly withdrawn fromthe carrier.7

Referring now in detail to the drawings: 1 designates a pedestalprovided with a suitable base 2, adapted to rest upon the door of amotion picture theater, or the iike.

Supported by the pedestal 1 shelf,

tabie, 3, upon which are disposed a cyi or drum, 4, a condenser ("i a 7ii In the cylinder 4. is a Like reference characters.

8, to the filaments of which lead'electrical conductors 9, 9 of anelectrical circuit in which is a switch 10.

Thecondenser 5 may be of ordinary construction, provided with a set ofcondensing lenses which collect the light rays, light. ing up the plate,or carrier, holding the advertising slides. The condenser casing isprovided at its sides with a slot 10, in which my carrier 11 may heslid.

As shown in Fig. 3, the carrier 11 is a plate preferably constructed oflead and, in the form shown, is rectangular and provided with arectangular beading 12, and

with loeadings 13 extending from said square bead ng 12. The beading 12,at its top, is provided with'a marginal outward projecting flange l4:and each of the headings 13 -1s provlded at its top with flanges 14, 14.

Said flanges constitute overhanging ledges under which transparentadvertising panels 15 may be slid, and frictionally held there byagainst accidental displacement. These slides 15 bear suitableadvertising matter, adapted to be projected as a border to the motionpicture being displayed upon the screen.

The portion 16 of the tin plate bounded by the rectangular beading 12 isimperforate, whilethe portions of the plate exterior to said centralportion 16, and comprised within the extensions 18, 13, 'are aperturedas shown at 17, which apertures are closed by the advertising slides 15when the latter are in position in the carrier.

It will be apparent from the above description that the device of myinvention is not an attachment to the ordinary motion ,inciudingcondenser casing provided with he sides thereof, of an opaque plate beshd into said condenser casing aid siots, comprising a central;

openings around said impertorete portion, tion, trai'isparentadvertising slides adapted transparent advertising siides, adapted ttocover said openings, and overhanging cover said openings, and mean forholding flanges carried by said opaque member and said slides inposition against accidentzii bOUflCii'flg three sides of each of saidopendispiecenient. ings for retaining said slides in position Shecombination with ste'eo ticon, against accidental displacement.including a comv enser cesing TYGViQE with L. In motion pictureapparatus, the comsiots in the sizes there-one; 1: OpRqLQ plate binationof a cylinden reflectc; there- 10 adapted to be iio, into said condensercnswithin, an electric iigiit bulb Within said siots end cor prising areflector, a condenser casing. at one of imperfomte portion, andprovided with vith o ienings around said imperforete norin through I: ocenrini imp- I and orovided said eyiinder and provided with siots in LRwith openings around szud iinperforete porsides thereof, a projectorcoininunicntin tion, transparent dre tisingi' slide; adapted with saidcondenser and an opaque member in to cover said and menus ii1'i(i eds dto be siid into said condenser for retaining said ing tirougii saidslots and provided with st accidental disa cent a iniperiorute portionand with zipr said im'oerforate poi nt advert

